API Errors on the free model in opencode zen

[evsphereofficial]

Description

I keep getting API Error "500:{"type":"error":"error":{"type:"error","message":"Internal Server error"}}

Plugins

No Plugins

OpenCode version

No response

Steps to reproduce

Open OpenCode
Select Free Model
Write any prompt
Send to OpenCode
It returns Error 500 Internal Server Error

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

Powershell

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Streaming response failed while using free model from provider OpenCode zen #39276: Same symptom — 500 error when using a free model in OpenCode Zen
• Internal Server Error #35486: Internal Server Error with a free/Zen model (Windows 11)
• [BUG]: OpenCode Zen free models hy3-free and nemotron-3-ultra-free failing while deepseek-v4-flash-free works #38028: OpenCode Zen free models failing with errors